When I look at the utility page I see "32bit,Windows 10 64bit,Windows 10 32bit " which I'll decline to unpack that for you but it does seem it should be fine.
If that fails I'd google like this: https://www.google.com/search?q=Radeon+R5+230+windows+10+driver
It appears there may be a driver that lists W10.
Does anyone know if the Windows 8 drivers listed on Gigabyte's support site for this agp allow it to work on Windows 10?

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